Valley of the Dinosaurs - "Forbidden Fruit"

Greg is warned against harvesting arok, a delicious fruit. But he can't resist and the smell of the fruit draws a massive Brontosaurus to the cave. The hungry beast traps the Butlers and their friends between arok and a hard place.

Valley of the Dinosaurs is an American animated television series produced by the Australian studios of Hanna-Barbera Productions and broadcast on CBS from September 7 to December 21, 1974, and in syndication from 1977 to 1983.